Padlock.



A. A. PAGE.

PADLOGK.

APPLIGATION FILED AUG. 3, 1911.

Patented June 18, 1912.

WITNESSES:

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ALBERT A. PAGE, OF EAST HAVEN, CONNECTICUT, ASSIGNOR TO SARGENT &, COMPANY,

OF NEW HAVEN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

PADLOCK.

Specification of Letters Patent.

Patented June 18, 1912.

Application filed August 3, 1911. Serial No. 642,127.

To all whom it may concern:

Be it known that I, ALBERT A. PAGE, of the town of East Haven, county of New Haven, and State of Connecticut, have invented new and useful Improvements in Padlocks, of which the following is a full, clear, and exact description when taken 1n connectlon wlth the accompanylng drawings.

My invention relates to pin tumbler padlocks, and its object is to provide a construction that enables the shackle and plug to be made in one piece so as to form a single integral member.

With this object and others in view, my invention consists in the novel features to be hereinafter described and claimed.

The invention is illustrated in preferable form in the accompanying drawings, in which Figure 1 is a side view in elevation of a padlock embodying my invention; Fig. 2,.

a top plan view; Fig. 3, a rear edge view; Fig. 4, a view similar to Fig. 3, with the shackle in raised and open position; Fig. 5, a central vertical section; Fig. 6, a cross section through the shackle on line wzv of Fig. 5; Fig. 7, a cross section through the plug on the line g of Fig. 5; Fig. 8, a top plan view of the shackle body before the insertion of the insert piece; Fig. 9, a detail side view of the integral member providing the shackle and plug members; and Fig. 10,

.a detail view of the insert or filler adapted to engage the keyway slot in the shackle.

In all figures, similar letters of reference represent like parts.

Referring to the drawings, the casing l of the padlock has a cylindrical passage therethrough which is adapted to receive a cylindrical plug 2. The plug 2 and the casing are provided with sockets 3 adapted to receive the sections 4 and 5 of spring pressed pin tumblers which are of the usual construction, and which are adapted to project from one member into the opposing sockets of the other member in order to hold the plug against protraction or retraction, and thus hold the shackle locked in place. These tumblers are adapted to be moved to released position by a key 6 which is inserted in a suitable key slot 7 formed in the plug.

8 designates the shackle which has a stud 9 adapted to engage a socket 10 carried by the casing. The shackle and the plug 2 are formed of a single integral piece of metal. To obtain rapidity and facility of manufacture the integral combined shackle and plug member may be cut from a bar of the proper size, and either in this bar or in the integral member cut therefrom is broached or cut the key-way slot 7. The shackle member proper 11, may be afterward cut and milled down to the proper form. WVith such mode of construction, the slot extends into and through the shackle, as shown in Figs. 5 and 8. To fill this part of the slot, a filler or insert piece 12, grooved and rabbeted to fit the slot is provided, and this insert is forced into the slot, so as to be permanently retained therein and close the slot in the shackle body proper. This mode of construction provides a device in which the shackle and the plug are made integral and affords a very rapid and convenient method of forming the respective parts to attain this end. A collar 14 is formed at the upper end of the plug and serves to limit the inward movement thereof.

A lug or shoulder 16 is provided on the end of the insert filler for the purpose of holding the shackle in projected position after the same has been moved outwardly by the pressure of the key and turned so as to release its stud from the socket. A notch or slot 17 in the casing admits the shoulder when the stud is brought into registry with the socket, whereby the shackle will be restored to locked position by the retracting act-ion of a spring 18 mounted within the casing and engaging the plug.

The shackle is adapted to be unlocked by inserting a key which sets the pin tumblers in released position, and thereupon the plug may be forced outwardly so as to release the stud 9 from its socket. The plug and shackle may then be rotated by the key.

Having now described my invention, what I claim and desire to secure by Letters Patent, is:

1. In a padlock, the combination with a shackle having an integral cylindrical portion constituting a pin tumbler plug and having a continuous key way slot cut through the plug and shackle, of an insert piece filling said slot in the shackle and permanently secured therein, substantially as described.

2. In a padlock, the combination of a casing having a notch, a shackle having an integral tumbler plug entering said casing adjacent said notch, and a separate piece fitting slot in the shackle, and having a shoulder cooperating with said notch, substantially as described.

3. In a padlock, the combination of a cas ing, a longitudinally movable tumbler plug therein, a shackle carried by the tumbler plug and having a key-way slot in line with the key-way slot of the tumbler plug, an insert piece fitted in the slotted portion of the shackle, and a shoulder on said insert piece cooperating with a notch in the casing to prevent the return of the tumbler plug into normal position after the padlock has been opened, except when said shoulder is in registry with said notch; substantially as described.

In Witness whereof, I have hereunto set my hand on the 28th day of July, 1911.

ALBERT A. PAGE. Witnesses:

HENRY H. MUNsoN, FRANK W. HUTCHINGS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

